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401

When you need a continously instrument reading (pressure gauge or thermometer) and in the same time open or close an electric circuit system, you shall apply to the instrument electric contacts. Three types are available:
-snap-action
-electronic
-inductive
A micro switch contacts are also available.
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402

Bourdon tube pressure gauges with integrated pressure transmitter 4 ÷20 mA all stainless steel pressure gauge:

-NS 100 and 150 waterthight casing in dry or liquid filled execution;
-ranges included between –1 and 600 bar transmitter with 4 ÷ 20 mA output.

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403

The operation of this instruments is based on the sensor deflection on which surface a resistance circuit is fixed. The deflection caused by process fluid pressure produces a resistances circuit unbalance, which due to such effect causes a variation of electrical signal proportional to the applied pressure. PDF

404

Smart pressure transmitter with HART®protocol - SE 129 - R/A Execution:
- R relative pressure
- A absolute pressure
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